Improvement in sash-fasteners



UNITED STATES PATENT OFFICE.

J. W. ELLIOT, OF LEIGESTER, MASSACHUSETTS.

IMPROVEMENT IN SASH-FASTENERS.

Specification forming part of Letters Patent No. 55,1175, dated June 12,1866.

To all whom it may concern:

Be it known that I, J. W. ELLIOT, of Leicester, in the county ofWorcesterl and State of Massachusetts, have invented a new and usefulImprovement in Sash-Fasteners, and I do hereby declare the following tobe a full, clear, and exact description of the nature, construction, andoperation of the same, reference being had to the accompanying drawings,which are made a part of this specication, and in which- Figure l is avertical section of a windowsash, frame, and sheeting with my inventionapplied, the sash being shown in its locked condition. Fig. 2 is asimilar view, showing the sash in its unlocked condition.

Similar letters of reference indicate corresponding parts in the twogures.

My invention relates to a sash-fastener which is not only adapted tosustain the sash at any desired height, but which will securely lock itin its closed position, and at all times press it against the jambs ofthe window-frame with I such a firm and steady pressure as to preventshaking and rattling from the wind and exclude the latter from theinterior of the dwelling or c ar.

The device consists of a sliding bolt and roughened foot orlocking-plate, combined with an eccentrically-pivoted lever and a spiralspring so arranged that the locking-plate is by the spring constantlyheld in contact with the jamb, so that the sash can neither be raisednor lowered till the plate is retracted by the lever, which is capableof ready detachment from the sliding bolt, in order that the sash whendown may securely be locked by the ronghened plate, and the means ofretracting the latter removed, if desired, to prevent the window beingeasily hoisted by a person not in possession of the lever.

The following' description will enable others skilled in the art towhich my invention appertains to fully understand and use the same.

A represents a bolt fitted to slide in a cor responding aperture in thestile B of the window-sash, and formed or provided at its innerextremity with an angular plate, O, which may work snugly within therecess D of the stile B.

The face of the plate O which comes in contact with the jamb E of thewindow-frame is roughened or formed with pointed projections c c o, toadapt the plate to take a firm hold upon the jamb and prevent the sashfrom being moved when acted upon by the spring F. This spring F isdesigned to be made of very strong steel, and being of helical form, itis placed around the inner end of the bolt A, with one end abuttingagainst the plate O and the other end against the stile B, and the outerportion of the spring is accommodated in the recess G of the said stile.

H is a lever provided with a pivot or fulcrum, h, which is slipped intothe slot c in the bolt A, in order to attach the lever to the bolt. Bythis means the lever His pivote-d after the manner of an eccentric, sothat when it is caught by the handle end and turned to a position atright angles with the stile of the sash, as represented in Fig. 2, thebolt A and plate O will be withdrawn from the jamb of the window-frame,and the sash may be raised or lowered at pleasure. In the act ofretracting the bolt the leverH has its fulcrum or bearing against aplate, I, fastened to the stile of the sash. When the lever H is turned,up against the stile of the sash, as represented in Fig. l, the springFforces the plate O against the jamb with aforce which in degree is muchbeyond that which is usually derived from the helical springs, which areemployed simply as accessories in sustaining the sash, for the plate Ois not only intended to sustain the sash at any required height, butconstitutes a lock to prevent the sash being forcibly raised.

The spring H holds the entire sash firmly and immovably against thejambs and fittings of the frame, so as to obviate rattling and shakingand prevent the entrance of the wind.

The fulcrum h and slot c permit the lever H. to be readily attached toand detached from the bolt A.

When lever H is detached the end of the bolt A will not projectsufficiently to afford an effective hold for the fingers to draw againstthe force of the spring, and in this sense the bolt, spring, and platemight be properly denominated a lock,77 and the leverIlthe key 7thereof.

If the stile of a sash should be too thin to re oeive the parts in themanner above described, substantially the same arrangement may beproduced by fixing them within a metallic box attached to the stile.

Having thus described my invention, the fol- 2. Tlie combination, Withthe bolt C and les lowing is what I claim as new and desire to ver H, ofthe fuleruln 7L and lever c, permitting secure by Letters Patent: theready attachment and detachment of the l. The combination of the bolt A,plate C, lever, as and for the objects specified.

spring F, and lever H, the Whole being con- J. W. ELLIOT.

strueted and arranged to operate as herein de- Witnesses:

scribed, so as to constitute a. sash lock and sus- D. THURsToN,

teiner. A. R. FAULKNER.

